What would you typically use to prevent corrosion inside a vehicle's closed sections?

Cavity wax is specifically designed for application in the hidden areas of a vehicle, such as inside closed sections and cavities that are prone to moisture accumulation and corrosion. Its formulation allows it to penetrate and adhere to metal surfaces, creating a protective barrier that inhibits moisture, salt, and other harmful elements from leading to rust and corrosion over time.

Unlike paint, which can be too rigid to cover all areas effectively and may not penetrate deeply into crevices, cavity wax adheres better in these challenging locations. Polyurethane sealants, while effective for sealing gaps and providing a degree of moisture resistance, are primarily used for joining surfaces rather than as a standalone corrosion preventative within cavities. Plastic sheeting, on the other hand, may serve to protect during storage or transport but does not provide long-term protection once applied in closed vehicle sections. Thus, cavity wax stands out as the most effective choice for preventing corrosion in these enclosed spaces.